If 2 enemy of superman figs have the same point cost can I decide which one gains outwit, or would it be neither

You get to choose.

SUPERMAN ENEMY
When two friendly characters that can use the
Superman Enemy team ability are adjacent to each other, the character
with the higher point value may be given a free action to immediately use
Outwit. That character can use Outwit until the beginning of your next
turn, if it cannot use Outwit already and continues to use this ability. If the
two characters have the same point value, their controller chooses which is
treated as the higher point character this turn.